Saturday, September 25, 2010

Flashlights

A few weeks ago, Larsen and I got separated around sundown.  That got me thinking about a flashlight for the backpack.  When Larsen was missing (chasing deer) I had in mind one of those torches that throws a beam you can practically walk on.  Of course, that is far too bright for just lighting up the trail, so you really need a multi-mode light. 

There are a lot of new LED-based lights out there.  I haven't selected one yet, but I'm thinking along the lines of:

  • At least 200 lumens when switched on high. (A lumen of light is as bright as one birthday candle a foot away.  The flashlight on your workbench puts out about 30 lumens.  A 60 watt lightbulb = 630 lumens.)
  • a high-low switch so that that the flashlight can be operated on low beam most of the time, with the turbo high-beam for emergencies.

100 lumens seems to be the ante for higher powered flashlights.  200-500 is for bright lighting while camping.  When you go above 500 lumens you are most likely talking about a lamp like this rather than a flashlight:









I'm more interested in a candlestick flashlight.  Maybe something like this, which claims to pitch at 240-280 lumens when operating at high-intensity.









This TK12 is a multi-mode flashlight.  The TK12 has an "Outdoor mode" and a "Camping Mode".
Outdoor Mode:
  • Output A: 50 Lumens/12 hours
  • Output B: 240 Lumens / 1.5 hours
Camping mode:
  • Output A: 5 Lumens/120 hours
  •  Output B: 90 Lumens / 5.5 hours

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